Ancient people looked up at the sky and observed the movement of the stars.

Ancient people looked up at the sky and observed the movement of the stars.

He prayed to the heavens.

The sky is blue, and the weather is nice, isn't it?

When I looked up at the sky, a beautiful blue sky was spread out.

What does this at sign mean?

The Schläfli symbol is a part of geometry, used to represent the shape of polyhedra.

By learning phonetic symbols, accurate pronunciation becomes possible.

Can you tell me the phonetic symbol of this word?

The bass clef is one of the basic elements of music.